3545320321 has 4 divisors (see below), whose sum is σ = 3566549952. Its totient is φ = 3524090692.

The previous prime is 3545320297. The next prime is 3545320351. The reversal of 3545320321 is 1230235453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3545320321 - 2⁷ = 3545320193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3545320321.

It is not an unprimeable number, because it can be changed into a prime (3545320351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10614565 + ... + 10614898.

It is an arithmetic number, because the mean of its divisors is an integer number (891637488).

Almost surely, 2^3545320321 is an apocalyptic number.

It is an amenable number.

3545320321 is a deficient number, since it is larger than the sum of its proper divisors (21229631).

3545320321 is a wasteful number, since it uses less digits than its factorization.

3545320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21229630.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 3545320321 is about 59542.5924947848. The cubic root of 3545320321 is about 1524.8196968236.

Adding to 3545320321 its reverse (1230235453), we get a palindrome (4775555774).

The spelling of 3545320321 in words is "three billion, five hundred forty-five million, three hundred twenty thousand, three hundred twenty-one".